U.S. patent application number 12/203426 was filed with the patent office on 2009-06-11 for method and device for setting rfid parameter.
This patent application is currently assigned to Electronics and Telecommunications Research Institute. Invention is credited to Jong-Suk CHAE, Gil Young CHOI, Jeong Seok KIM, Chan-Won PARK, Cheol Sig PYO.
Application Number | 20090146787 12/203426 |
Document ID | / |
Family ID | 40721032 |
Filed Date | 2009-06-11 |
United States Patent
Application |
20090146787 |
Kind Code |
A1 |
PARK; Chan-Won ; et
al. |
June 11, 2009 |
METHOD AND DEVICE FOR SETTING RFID PARAMETER
Abstract
The present invention relates to an RFID parameter setting
method and device in an RFID system including a first means for
comparing a first mobile country code provided by the outside and a
currently set second mobile country code, and generating a control
signal for changing an RFID parameter setting of the RFID system
according to the RFID standard that corresponds to the first mobile
country code when the first mobile country code and the second
mobile country code do not correspond with each other, and a second
means for setting an operational frequency of the RFID system
according to the control signal.
Inventors: |
PARK; Chan-Won; (Daejeon,
KR) ; KIM; Jeong Seok; (Daejeon, KR) ; CHOI;
Gil Young; (Daejeon, KR) ; PYO; Cheol Sig;
(Daejeon, KR) ; CHAE; Jong-Suk; (Daejeon,
KR) |
Correspondence
Address: |
CANTOR COLBURN, LLP
20 Church Street, 22nd Floor
Hartford
CT
06103
US
|
Assignee: |
Electronics and Telecommunications
Research Institute
Daejeon
KR
|
Family ID: |
40721032 |
Appl. No.: |
12/203426 |
Filed: |
September 3, 2008 |
Current U.S.
Class: |
340/10.1 |
Current CPC
Class: |
H04Q 2213/13095
20130101; H04W 88/04 20130101; G06K 7/10297 20130101; H04W 48/08
20130101; G06K 7/0008 20130101 |
Class at
Publication: |
340/10.1 |
International
Class: |
H04Q 5/22 20060101
H04Q005/22 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 10, 2007 |
KR |
10-2007-0127786 |
Mar 5, 2008 |
KR |
10-2008-0020669 |
Claims
1. An RFID parameter setting device of an RFID system comprising: a
first means for comparing a first mobile country code provided by
the outside and a currently set second mobile country code, and
generating a control signal for changing RFID parameter setting of
the RFID system according to the RFID standard that corresponds to
the first mobile country code when the first mobile country code
and the second mobile country code do not correspond with each
other; and a second means for setting an operational frequency of
the RFID system according to the control signal.
2. The RFID parameter setting device of claim 1, wherein the device
further includes a third means for storing RFID standards for the
respective first mobile country codes, and the first means
generates the control signal by referring to the RFID standards of
the first mobile country codes stored in the third means.
3. The RFID parameter setting device of claim 2, further comprising
a fourth means for controlling a channel bandwidth of the RFID
system according to the control signal.
4. The RFID parameter setting device of claim 2, further comprising
a fifth means for controlling an output power of the RFID system
according to the control signal.
5. The RFID parameter setting device of claim 1, wherein the first
mobile country code is extracted from the signal received from the
base station.
6. The RFID parameter setting device of claim 1, wherein the first
mobile country code is input by the user.
7. An RFID parameter setting method of an RFID system comprising:
receiving a signal from a base station; extracting a first mobile
country code from the signal; and when the first mobile country
code does not correspond to the currently set second mobile country
code, changing the RFID parameter setting of the RFID system
according to the RFID standard corresponding to the first mobile
country code.
8. The RFID parameter setting method of claim 7, wherein the
changing includes: generating a control signal for changing the
RFID parameter setting according to the RFID standard corresponding
to the first mobile country code; and setting an operational
frequency of the RFID system according to the control signal.
9. The RFID parameter setting method of claim 8, wherein the
changing further includes: controlling a channel bandwidth of the
RFID system according to the control signal; and controlling an
output power of the RFID system according to the control
signal.
10. The RFID parameter setting method of claim 8, wherein the
generating includes generating the control signal by using the RFID
standards of the stored first mobile country codes.
11. An RFID parameter setting method of an RFID system comprising:
receiving a first mobile country code; and when the first mobile
country code does not correspond to the currently set second mobile
country code, changing the RFID parameter setting of the RFID
system according to the RFID standard corresponding to the first
mobile country code.
12. The RFID parameter setting method of claim 11, wherein the RFID
parameter includes an operational frequency of the RFID reader, a
channel bandwidth, and an output power.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority to and the benefit of
Korean Patent Application No. 10-2007-0127786 filed in the Korean
Intellectual Property Office on Dec. 10, 2007, and No.
10-2008-0020669 filed therein on Mar. 5, 2008, the entire contents
of which are incorporated herein by reference.
BACKGROUND OF THE INVENTION
[0002] (a) Field of the Invention
[0003] The present invention relates to a radio frequency
identification (RFID) parameter setting method and device in an
RFID system, and more particularly, relates to a method and device
for automatically setting an RFID parameter by using a mobile
country code (MCC) included in a downlink signal of a mobile
communication network.
[0004] This work was supported by the IT R&D program of
MIC/IITA [2006-S-023-02, Development of Advanced RFID System
Technology].
[0005] (b) Description of the Related Art
[0006] RFID is a skill for recognizing, tracking, and managing
things, animals, or people to which an electronic tag is attached
by reading or recording information from the tag (electronic tag or
transponder) having proper identification information through a
non-contact method by using radio frequency (RF) signals. A passive
RFID system generally uses a frequency of 900 MHz bandwidth, and
includes a plurality of tags that have proper identification
information and are attached to a product, human, or animal, and an
RFID reader (or interrogator) for reading or writing information of
the tag.
[0007] A mobile RFID uses ultra high frequency (UHF) (860-960 MHz)
bandwidth from among various radio frequency bandwidths for the
RFID/USN (ubiquitous sensor network).
[0008] The domestic standard has selected the channel bandwidth of
200 kHz for each channel in the frequency bandwidth of 5.5 MHz of
908.5-915 MHz, and uses the European listen before talk (LBT)
method together with the US frequency hopping (FH) method.
[0009] Table 1 expresses the frequency bandwidths allocated to
different countries.
TABLE-US-00001 TABLE 1 Countries ISO/ IEC US EU Australia Brazil
China Japan Korea Allocated 860-960 902-928 MHz 865.6-867.6 MHz
920-926 MHz 902-907.5 MHz 840.5-844.5 MHz 952-954 MHz 908.5-914 MHz
frequency MHz 26Mz (2 MHz) (6 MHz) 915-928 MHz 920.5-924.5 MHz
952-955 MHz (5.5 MHz)
[0010] As expressed in Table 1, the RFID system has different
frequency ranges, outputs, and channel use methods for the
respective countries. Therefore, it is required to reset the RFID
parameters depending on the current country when a user moves
between countries holding a mobile RFID phone. Particularly, when
the frequency bandwidth used by the RFID reader of the mobile RFID
phone corresponds to the mobile communication frequency bandwidth
used in the corresponding area, the functions of the RFID reader
cannot be used, and the mobile communication terminal of the mobile
RFID phone may interfere with the RFID reader.
[0011] For example, since the global system for mobile
communication (GSM) system uses the frequency bandwidth of 890-915
MHz for uplink and uses the frequency bandwidth of 935-960 MHz for
downlink, many parts of the frequency bandwidths match the RFID
frequency bandwidth used by many countries. Therefore, when the
user moves from a country using the GSM system to another country
using the RFID frequency range including the frequency bandwidth of
the GSM system or vice versa, the mobile communication terminal of
the mobile RFID phone and the RFID reader interfere with each
other.
[0012] That is, the RFID frequencies or the outputs violating the
standards of other countries cannot be used as a rule. Therefore,
the RFID function cannot be used when the user moves between the
countries using different RFID frequency bandwidths.
[0013] The above information disclosed in this Background section
is only for enhancement of understanding of the background of the
invention and therefore it may contain information that does not
form the prior art that is already known in this country to a
person of ordinary skill in the art.
SUMMARY OF THE INVENTION
[0014] The present invention has been made in an effort to provide
a method for automatically setting an RFID parameter according to
an RFID frequency bandwidth used by a corresponding country when
moving between countries using different RFID frequency
bandwidths.
[0015] An exemplary embodiment of the present invention provides an
RFID parameter setting device of an RFID system including: a first
means for comparing a first mobile country code provided by the
outside and a currently set second mobile country code, and
generating a control signal for changing RFID parameter setting of
the RFID system according to the RFID standard that corresponds to
the first mobile country code when the first mobile country code
and the second mobile country code do not correspond with each
other; and a second means for setting an operational frequency of
the RFID system according to the control signal.
[0016] Another embodiment of the present invention provides an RFID
parameter setting method of an RFID system including: receiving a
signal from a base station; extracting a first mobile country code
from the signal; and when the first mobile country code does not
correspond to the currently set second mobile country code,
changing the RFID parameter setting of the RFID system according to
the RFID standard corresponding to the first mobile country
code.
[0017] Yet another embodiment of the present invention provides an
RFID parameter setting method of an RFID system including:
receiving a first mobile country code; and when the first mobile
country code does not correspond to the currently set second mobile
country code, changing the RFID parameter setting of the RFID
system according to the RFID standard corresponding to the first
mobile country code.
[0018] According to the present invention, the RFID parameter of
the RFID reader is set by the RFID standard of the corresponding
country during roaming by the mobile RFID phone to prevent
collision between the mobile communication frequency and the RFID
frequency, and the RFID function can be used for movement between
countries using different RFID frequency bandwidths.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] FIG. 1 shows a block diagram of an RFID parameter setting
device according to a first exemplary embodiment of the present
invention.
[0020] FIG. 2 shows a flowchart of an RFID parameter setting method
according to a second exemplary embodiment of the present
invention.
[0021] FIG. 3 shows a flowchart of an RFID parameter setting method
according to a third exemplary embodiment of the present
invention.
DETAILED DESCRIPTION OF THE EMBODIMENTS
[0022] In the following detailed description, only certain
exemplary embodiments of the present invention have been shown and
described, simply by way of illustration. As those skilled in the
art would realize, the described embodiments may be modified in
various different ways, all without departing from the spirit or
scope of the present invention. Accordingly, the drawings and
description are to be regarded as illustrative in nature and not
restrictive. Like reference numerals designate like elements
throughout the specification.
[0023] Throughout the specification, unless explicitly described to
the contrary, the word "comprise", and variations such as
"comprises" and "comprising", will be understood to imply the
inclusion of stated elements but not the exclusion of any other
elements. Also, the terms "unit", "device", and "module" in the
present specification represent a unit for processing a
predetermined function or operation, which can be realized by
hardware, software, or a combination of hardware and software.
[0024] First, a RFID parameter setting device according to a first
exemplary embodiment of the present invention will now be described
with reference to FIG. 1. FIG. 1 shows a block diagram of the RFID
parameter setting device according to the first exemplary
embodiment of the present invention.
[0025] As shown in FIG. 1, the RFID parameter setting device
includes a terminal 100 and an RFID reader 200.
[0026] The terminal 100 includes a base station signal receiver
101, an MCC extractor 102, and an RFID reader communicator 103. The
base station signal receiver 101 receives a signal from the base
station, the MCC extractor 102 extracts an MCC including serviced
country information from the received signal, and the RFID reader
communicator 103 transmits the extracted MCC to an RFID reader.
[0027] The RFID reader includes an MCC RFID standard storage unit
201, a terminal communicator 202, an MCC comparator 203, a
frequency controller 204, a channel bandwidth controller 205, an
output power controller 206, an LBT/FHSS (frequency hoping spread
spectrum) on/off unit 207, a phase-locked loop (PLL) 208, a band
pass filter 209, an output amplifier 210, and an LBT/FHSS
controller 211.
[0028] The MCC RFID standard storage unit 201 stores RFID standards
for the respective MCC's. That is, the MCC RFID standard storage
unit 201 stores RFID parameters for the MCC including a frequency
range, a channel width, a central frequency, a maximum power, an
LBT usage state, an FHSS usage state, and an LBT/FHSS concurrent
usage state.
[0029] The terminal communicator 202 receives an MCC from the
terminal 100.
[0030] The MCC comparator 203 determines whether the MCC provided
by the terminal 100 matches the existing MCC, and when they match
with each other, it maintains the existing RFID reader frequency
setting method, and when they do not, it refers to the MCC RFID
standard storage unit 201 transmits a control signal for changing
the RFID parameter setting of the RFID reader according to the RFID
standard that corresponds to the MCC provided by the terminal 100
to the frequency controller 204, the channel bandwidth controller
205, the output power controller 206, and the LBT/FHSS on/off unit
207.
[0031] The frequency controller 204 changes the frequency setting
of the PLL 208 according to the control signal provided by the MCC
comparator 203 to set an operational frequency of the RFID reader
200, the channel bandwidth controller 205 controls the bandwidth of
the band pass filter 209 according to the control signal provided
by the MCC comparator 203, and the output power controller 206
controls the power of the output amplifier 210 according to the
control signal provided by the MCC comparator 203. The LBT/FHSS
on/off unit 207 sets the functions of the LBT and the FHSS.
[0032] The LBT/FHSS controller 211 receives the control signal from
the LBT/FHSS on/off unit 207 to set the function so that the RFID
reader may be operable by LBT or FHSS.
[0033] An RFID parameter setting method according to a second
exemplary embodiment of the present invention will now be described
with reference to FIG. 2. FIG. 2 shows a flowchart of an RFID
parameter setting method according to a second exemplary embodiment
of the present invention.
[0034] As shown in FIG. 2, when the terminal 100 roams (S301) and
the base station signal receiver 101 receives a signal from the
base station (S302), the MCC extractor 102 extracts the MCC from
the received signal (S303). The signal received by the base station
signal receiver 101 includes an MCC including country information,
and it is used to identify the currently serviced country through
the MCC.
[0035] The MCC comparator 203 compares the extracted MCC and the
MCC stored in the RFID reader 200, that is, the MCC set in the RFID
reader 200 to determine whether the extracted MCC corresponds to
the MCC set in the RFID (S304). When the extracted MCC corresponds
to the MCC set in the RFID, the RFID reader 200 maintains the RFID
parameter setting (S305).
[0036] When the extracted MCC does not correspond to the MCC set in
the RFID, the MCC comparator 203 finds an RFID standard
corresponding to the MCC extracted from the MCC RFID standard
storage unit 201, and transmits a control signal for changing the
RFID parameter setting of the RFID reader 200 to the frequency
controller 204, the channel bandwidth controller 205, the output
power controller 206, and the LBT/FHSS on/off unit 207 (S306).
[0037] The frequency controller 204 sets the frequency range and
central frequency of the RFID reader 200 according to the control
signal (S307), the channel bandwidth controller 205 sets the
channel bandwidth according to the control signal (S308), and the
output power controller 206 sets the power of the output amplifier
210 according to the control signal (S309). The LBT/FHSS on/off
unit 207 sets the LBT and FHSS function according to the control
signal (S310).
[0038] An RFID parameter setting method according to a third
exemplary embodiment of the present invention will now be described
with reference to FIG. 3. FIG. 3 shows a flowchart of an RFID
parameter setting method according to a third exemplary embodiment
of the present invention.
[0039] As shown in FIG. 3, an MCC is provided by a user (S401).
[0040] The MCC comparator 203 compares the input MCC and the MCC
stored in the RFID reader 200, that is, the MCC set in the RFID
reader 200, determines whether the extracted MCC corresponds to the
MCC set in the RFID (S402), and when they correspond with each
other, it maintains the RFID parameter setting (S403), and when
they do not, it finds an RFID standard that corresponds to the MCC
input by the MCC RFID standard storage unit 201 and transmits a
control signal for changing the RFID parameter setting of the RFID
reader 200 to the frequency controller 204, the channel bandwidth
controller 205, the output power controller 206, and the LBT/FHSS
on/off unit 207 (S404).
[0041] The frequency controller 204 sets a frequency range and a
central frequency of the RFID reader 200 according to the control
signal (S405), the channel bandwidth controller 205 sets the
channel bandwidth according to the control signal (S406), and the
output power controller 206 sets the power of the output amplifier
210 according to the control signal (S407). The LBT/FHSS on/off
unit 207 sets the LBT and FHSS function according to the control
signal (S408).
[0042] The above-described embodiments can be realized through a
program for realizing functions corresponding to the configuration
of the embodiments or a recording medium for recording the program
in addition to through the above-described device and/or method,
which is easily realized by a person skilled in the art.
[0043] While this invention has been described in connection with
what is presently considered to be practical exemplary embodiments,
it is to be understood that the invention is not limited to the
disclosed embodiments, but, on the contrary, is intended to cover
various modifications and equivalent arrangements included within
the spirit and scope of the appended claims.
* * * * *